- added an IntArrayStack and an ArrayBucketQueue that can be used with the BucketQueueAStar (but they are equally fast as the ListBucketQueue) - removed some shorts
- added an IntArrayStack and an ArrayBucketQueue that can be used with the BucketQueueAStar (but they are equally fast as the ListBucketQueue)
- removed some shorts

Peter-Maximilian/settlers-remake,jsettlers/settlers-remake,andreas-eberle/settlers-remake,jsettlers/settlers-remake,andreasb242/settlers-remake,andreasb242/settlers-remake,andreasb242/settlers-remake,jsettlers/settlers-remake,JKatzwinkel/settlers-remake,phirschbeck/settlers-remake,phirschbeck/settlers-remake,andreas-eberle/settlers-remake,andreas-eberle/settlers-remake,phirschbeck/settlers-remake